<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <!-- import CSS -->
    <link rel="stylesheet" href="https://cdn.staticfile.org/element-ui/2.15.9/theme-chalk/index.css">
</head>
<body>
<div id="app">
    <el-menu mode="horizontal">
        <el-menu-item index="1">首页</el-menu-item>
        <el-menu-item index="2">直播课</el-menu-item>
        <el-menu-item index="3">免费课</el-menu-item>
        <el-submenu index="4">
            <template slot="title">其它</template>
            <el-menu-item index="4-1">联系电话</el-menu-item>
            <el-menu-item index="4-2">相关问题</el-menu-item>
            <el-submenu index="4-3">
                <template slot="title">解决方案</template>
                <el-menu-item index="4-3-1">方案一</el-menu-item>
                <el-menu-item index="4-3-2">方案二</el-menu-item>
                <el-menu-item index="4-3-3">方案三</el-menu-item>
            </el-submenu>
        </el-submenu>
    </el-menu>
</div>
</body>
<!-- import Vue before Element -->
<script src="https://cdn.staticfile.org/vue/2.6.14/vue.min.js"></script>
<!-- import JavaScript -->
<script src="https://cdn.staticfile.org/element-ui/2.15.9/index.min.js"></script>
<script>
    let v = new Vue({
        el: '#app',
        data: function() {
            return {

            }
        },
        methods: {

        },
    })
</script>
</html>